Salary hold

I've been framed to an incident that occurred in my organization. My senior acknowledged me the issue by framing it as my mistake. As it's been just 4months to my joining and i just completed my probation period, I got scared and accepted it as my mistake, later when I looked at the details and facts, it really wasn't my mistake. Now the organization has kept my salary on hold for the month of March, they did the same for Feb as well to which after multiple requests they released few amount but deduction was also there and they're now asking me to increase the bond and do overtime to compensate the loss. Where it Clearly wasn't my fault. I've provided the letter regarding the same as well and have sent the mail also, they yet couldn't make my fair decision upon the issue and also not giving me my salary for the month of March. I'm being mentally harassed and have informed the management also that it's getting tough for me to survive as I've traveled so far from my home to work here. And to which they're not paying much attention, I want to quit this job but with a clean slate.